Polarized relay



, (No Model.)

G. T. WOODS.

POLORIZED RELAY.

10.366,192. PatenfedJuly 5, 1887.

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GRANVILLE T. WOODS,

OF CINCINNATI, OI-IIO.

vvPOLARIZED RELAYu SPECIFICATION forming part of Letters Patent No. 366,192, dated July 5, 1887.

Application filed November 3, 1856. Serial No. 217,859. (No model.)

To all whom, it may concern:

' Be it known that I, GRANVILLE T. VOODS, a citizen of the United States, residing at Cincinnati, Ohio, have invented new and useful Improvements -in Polarized Relays, of which the following is a specification.

My invention relates to polarized relays, its object being to improve theconstruction in order to obtain a more sensitive and perfect action of the same under all conditions of use, especially with reference to the employment of said relayin systems of induction teleg raphy, and particularly in telegraphy betweenmoving trains of cars on railways by means of induced currents of comparatively low tension, where the relay is also subject to the vibrations of moving cars. In such situations, especially, .the operations of relays are liable to be impeded by the jarring and shaking movements of the ears, and my improvement seeks to increase the efficiency and certainty of action of the relay in order to render the same independent of such jarring, and also to provide a construction tending to lessen the liability to such interfering conditions and obtain means for a more perfect adjustment of parts.

To this end my invention consists in the construction of a relay, as hereinafter more fully described, and illustrated in the accompanying drawings, in which- Figure lis aside elevation of my improved relay complete; Fig. 2, a side elevation showing a slight modification of structure; and Fig. 3, a detail section of the adj ust-ing-uut, shown ing the means of adjusting the position of the electro magnets relatively to the vibrating armature.

vReferring now to the drawings, Fig. 1, A

A designate two curved permanent magnets secured to a common base, A. Correspond ing poles,l3 B,of the magnets are brought upward to a common horizontal plane sufficiently elevated,1 and connected by a horizontat bridge-piece, F, by rivets B B', or other fastening. The remaining poles,C C,of the mag nets A Aterminate beneath the lower ends or l poles of two electro-magnets, D D,which latter rest vertically upon a second bridge-piece, D2, suspended beneath the bridge F by means of suspension-rods I I', which pass through the bridge F, and are threaded above into set nuts JJ. Coiled 'springs s s surround the the bridge D2 downward against the holding adjusting-nuts J J', the construction thus affording means of adjusting the magnets D D vertically. Immediately over the electromagnets D D is pivoted (between lugs F', secured beneath and upon the bridge F) niidway between the magnets D D a delicatelyA balanced armature, G, extending horizontally over the upper poles of the magnetsDD'.

and is vibrated by the alternate energizing of the electromagnets D D', whose coils are in the main lineK K.l Back-stops GHG2 are arranged in the bridge F above the respective ends of the armature G, adjustableby set-nuts M M. Baclvstop G is insulated from bridge F. The local-circuit line L connects with the bridge F, the current passing through the armaturepivot and armature to m, thence by the contact-stop G out to the continued circuit L. The cores of electromaguets D D are polarized by induction from the magnetpoles CO, and are respectively strengthened and weakened lalternately by the currents passing alternately in opposite directions through the main` line K K. Thus that magnet which predominates in strength for the time being always attracts the nearest end of the armature G, thus vibrating the armature in unison with the reversals in the main cir cuit., It will be readily understood from the construction that the magnets A A are made to exhibit opposite polarities at C and B, respectively, and that the polarities of B B are practically extended to and most strongly ef- In the modification exhibited in Fig. 2 a single permanent magnet, A, is employed, but charged to exhibit the same sign of polarity at B B. In this case a central pole-piece, CZ, drawn out laterally to extend beneath the electro-magnets, as at CC, is secured in thelower curve of magnet A, which thus becomes the second pole of the magnet, and the same effect is produced as in the case described.

chanical construction the improvement oers great facilities for adjustment, and that the armature G is poisedin such manner as to reduce liability to abnormal action through jar- It will be perceived that in point of' merods I I between the bridges F D2 and hold This armature G is the local-circuit controller,

fective at F, thus polarizing the armature G: 9o

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ring or shaking, while preserving its sensitiveness to current action.

I claim as my invention and desire to secure by Letters Patent ot the United Statesl. In a polarized relay, a horizontal pivoted armature arranged beneath a horizontal extension connecting two like poles of a permanent magnet, and constituting a switch in the local circuit, in combination with two electro-magnets in the 'main circuit suspended beneath the vibrating armature and above the remaining pole ofthe permanentmagnet,snb stantially as set forth.

2. In a polarized relay, the combination of the permanent magnet A A', having poles B B and C G, respectively corresponding,a bridgepiece, F, connecting the poles B B, insulated bridge D2, suspension-rods I I', springs s, ad-

justingnnts JJ, electro-magnets D D', armature G, contact-stop G', local-circuit wire L L, and mainline wire K K', substantially as set forth.

3. In apolarized relay, the combination ol1 a curved or U -shaped permanent magnet showing the same sign of magnetism at its outer poles, a bridgepiece connecting said poles, asccond insulated bridge-piece suspended adljustably beneath the rst in proximity to the inner pole of the magnet, and carrying two electro magnets with coils in the main circuit and vertical cores arranged between in the plane of the bridges, a horizontal balanced armature pivotally suspended beneath the first bridge with its, ends in attractive proximity to the electromagnet cores, and two back-stops, one ot' whiel1,with the pivot ofthe vibrating armature and the intervening portion of the armature, is in the local circuit, substantially as set forth.

In testimony whercofI have hereunto sctmy hand in the presence of two subscribing wil.- nesses.

GRANVILLE T. XVOODS.

Vilncsses:

Il. L. Knien, C. D. Knien. 

